Well man I think it is possible that we will see again a price below 300$ since bitcoin's price is unpredictable. Well IMO I think it will be possible if the selling pressure would be to hard after the rises that happens now. Only time can tell what will be the price of bitcoin.
The price could drop below $600 in the next few weeks. But it will not drop below $300 any time in the future.
I think the price will not drop below $600. The price will trade between $620 to $690 for the next few months.